Medical Technology Mathematics Exam Bank
Course Introduction
Medical Technology Mathematics introduces students to the fundamental mathematical concepts and quantitative techniques essential in the clinical laboratory setting. The course covers topics such as basic algebra, measurements, statistical analysis, and problem-solving strategies as applied to laboratory procedures. Emphasis is placed on calculations involving solutions, dilutions, concentrations, and quality control statistics, ensuring accuracy and reliability in diagnostic test results. Through practical examples and case studies, students gain the mathematical skills and confidence needed for routine and advanced laboratory work in medical technology.
Recommended Textbook
Clinical Laboratory Mathematics 1st Edition by Mark Ball
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12 Chapters
223 Verified Questions
223 Flashcards
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Page 2
Chapter 1: Arithmetic and Algebra
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19 Verified Questions
19 Flashcards
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Sample Questions
Q1) Consider the following expression. 9 - (-3) Which of the following expressions is another way of writing this?
A) 3 + 9
B) 3 - 9
C) 9 + 3
D) 9 - 3
Answer: C
Q2) What does the term "denominator" refer to?
A) The number by which a fraction is divided during reducing
B) The number located on the top of a fraction
C) The number of equal parts into which something is divided
D) The number of parts of something that are being considered
Answer: C
Q3) What is the correct procedure for dividing fractions?
A) Add the numerators and add the denominators.
B) Multiply the numerators and multiply the denominators.
C) Multiply one fraction by the reciprocal of the other fraction.
D) Subtract the numerators and subtract the denominators.
Answer: C
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Chapter 2: Exponential Notation & Logarithms
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17 Verified Questions
17 Flashcards
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Sample Questions
Q1) The value of e can be determined with which equation?
A) \( \left(1+\frac{1}{n}\right)^{n} \)
B) (1 + x)
C) \( \frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a} \)
D) (x + a)
Answer: A
Q2) What is the natural logarithm of a number?
A) It is the exponential created from the logarithm of the number taken to the power of e.
B) It is the logarithm of the number to the base e.
C) It is the product of the logarithm of the number multiplied by the logarithm of e.
D) It is the quotient of e divided by the logarithm of the number.
Answer: B
Q3) Which of the following equations correctly simplifies the calculation of (5 ) ?
A) 5<sup>(5+5)</sup>
B) 5<sup>(5-5)</sup>
C) 5<sup>(5×5)</sup>
D) 5<sup>(5÷5)</sup>
Answer: C
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4
Chapter 3: Rounding and the Significance of Figures
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17 Verified Questions
17 Flashcards
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Sample Questions
Q1) A scientist measures the volume of a liquid and determines it to be 324 mL.However,for the purposes of her experiment,the value must be rounded to the nearest hundred.Which of the following value should she use?
A) 300 mL
B) 320 mL
C) 330 mL
D) 400 mL
Answer: A
Q2) Which statement is accurate regarding the total number of significant figures a number contains?
A) As the number of significant figures increases, the precision of the value increases.
B) In science, a measurement is only considered valid if it contains at least four significant digits.
C) As the number of significant digits increases, so does the margin of error in a measurement.
D) The number of uncertain digits increases as the number of significant digits increases.
Answer: A
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Chapter 4: Systems of Measurement
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20 Flashcards
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Sample Questions
Q1) How does expressing terms in the unit mole simplify calculations?
A) It deletes zeros.
B) It is easier to convert the value to liters.
C) It minimizes the number of necessary calculations.
D) It reduces the value of the measurement.
Q2) Which of the following equations describes the relationship between the Kelvin scale and the Celsius scale?
A) K = °C + 273.15
B) K = (°C × \( \frac{9}{5} \) ) + 32
C) K = \( \frac{180^{\circ} \mathrm{F}}{100^{\circ} \mathrm{C}} \)
D) K = °C × 190
Q3) What system of units includes liter and meter?
A) International System of Units
B) Metric System
C) United States Customary System of Units
D) United States Standards for Units and Measurements
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Chapter 5: Solutions and Concentrations
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19 Flashcards
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Sample Questions
Q1) What is the specific gravity of a solution?
A) The ratio of the concentration of a solute to the concentration of the solvent at 37°C
B) The ratio of the concentration of a solute to the density of water at 4°C
C) The ratio of the density of a solute to the density of the solvent at 37°C
D) The ratio of the density of a solution to the density of water at 4°C
Q2) When a concentration is expressed in terms of molarity,what does it tell us about the solution?
A) The number of moles of a solute present in 1 liter of solution
B) The number of moles of a solute present in 1,000 grams of solution
C) The number of osmoles of a solute present in 1 liter of solution
D) The number of osmoles of a solute present in 1,000 grams of solution
Q3) What is pH a measure of?
A) The concentration of hydrogen ions in a solution
B) The normality of a solution containing 10 grams hydrogen ions in water
C) The reaction speed of hydrogen ions with bases in a solution
D) The specific gravity of 10 grams of hydrogen ions in water
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Chapter 6: Dilutions
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Sample Questions
Q1) A sample ready for analysis is a 1:2 dilution.Which of the following is true about this sample?
A) The volume of the sample is decreased by a factor of 2, and the concentration is decreased by 2.
B) The volume of the sample is decreased by a factor of 2, and the concentration is increased by 2.
C) The volume of the sample is increased by a factor of 2, and the concentration is decreased by 2.
D) The volume of the sample is increased by a factor of 2, and the concentration is increased by 2.
Q2) A 100 L sample of blood is diluted with 200 L saline solution.What is the dilution ratio of the sample after dilution?
A) 1:2
B) 1:3
C) 1:4
D) 1:10
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Chapter 7: Proportionality, Graphs, and Rates of Change
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Sample Questions
Q1) Which of the following equations represents the proportionality of two variables,where one variable is always five times the value of the other?
A) 5y = 5x
B) 5y = x + 5
C) y = 5x
D) y = x + 5
Q2) The following equation represents the proportionality of two variables: y = 4x What is the proportionality constant of this equation?
A) 4
B) 4x
C) x
D) y
Q3) Which of the following statements is true regarding the variables in an equation that produces a straight line with a negative slope?
A) The two variables move in opposite directions, and are proportional.
B) The two variables move in opposite directions, but are not proportional.
C) The two variables move in the same direction, and are proportional.
D) The two variables move in the same direction, but are not proportional.
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9
Chapter 8: Statistics
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Sample Questions
Q1) The central tendency of a numerical data set refers to A) accuracy.
B) the pattern created by the data when plotted on a logarithmic scale.
C) the precision of the equipment from which the data were obtained.
D) the value that typifies the data.
Q2) What does the mode of a data set represent?
A) The average of the value of all the data
B) The inverse of the mean calculated from all the values
C) The median value of the data set
D) The value that occurs most frequently
Q3) Which of the following sets of data would be bimodal?
A) 2, 2, 5, 6, 9, 9, 10, 12, 15, 17, 19
B) 2, 4, 6, 8, 10, 12, 14, 16, 18
C) 3, 3, 3, 4, 5, 6, 7, 9, 11, 14, 14
D) 3, 3, 4, 5, 6, 7, 9, 11, 11, 14, 17
Q4) How does one calculate the mean of a data set?
A) Add all the values together and divide the sum by the number of values.
B) Add the largest and smallest value and divide the sum by 2.
C) Add the two largest values and divide the sum by the number of values.
D) Add the two middle values and divide the sum by 2.
Page 10
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Chapter 9: Chemistry
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Sample Questions
Q1) What impact would an increase in the concentration of HCO and decrease in the concentration of unquantified anions have on the value of the anion gap?
A) It would decrease.
B) It would increase.
C) It would remain constant.
D) None of the above
Q2) The following equation describes Henry's Law: S = kPg s
According to this Law,an increase in the partial pressure of the gas indicates that the mass of the dissolved gas
A) decreases.
B) increases.
C) remains constant.
D) none of the above
Q3) What is the significance of the following reaction?
H CO H + HCO
A) It is the fastest known physiological enzymatic reaction.
B) It is the Henderson-Hasselbalch equation.
C) It is the Michaelis-Menten reaction.
D) It is part of the pH buffering system in the blood.
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Chapter 10: Hematology
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18 Verified Questions
18 Flashcards
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Sample Questions
Q1) When a Miller disk is used to enumerate reticulocytes,which of the following counts are needed?
A) The number of red blood cells in both squares, and the number of reticulocytes in both squares
B) The number of red blood cells in both squares, and the number of reticulocytes in the small square
C) The number of red blood cells in the small square, and the number of reticulocytes in both squares
D) The number of red blood cells in the small square, and the number of reticulocytes in the small square
Q2) A clinical laboratory technician is asked to determine the concentration of red blood cells (RBCs)from a sample of turbid knee fluid using a hemacytometer.The technician dilutes the sample with normal saline and loads it onto the hemacytometer.A total of 400 red blood cells are counted over 5 squares.What additional information is required to calculate the concentration of RBCs?
A) The WBC count
B) The dilution factor
C) The number of platelets
D) The red-cell distribution width
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Page 12
Chapter 11: Quality Control
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Sample Questions
Q1) How can the effects of random error be minimized?
A) By averaging a large number of results
B) By having all tests performed by the same technician
C) By multiplying the results by a constant standard
D) By performing control tests in a fixed environment
Q2) Which of the following explains how a violation of Westgard Rule R s is identified?
A) The difference between two consecutive data points is at least 4 SD, and one data point lies above \( \bar{x}+2 s \) and the other lies below \( \bar{x}-2 s \).
B) The result from 2 single control run lies outside the range \( \bar{x} \pm 3 s \)
C) The result from one control lies above \( \bar{x}+2 s \), and the result from a different control lies below \( \bar{x}-3 s \).
D) Both A and C are correct.
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Chapter 12: Method Evaluation
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20 Flashcards
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Sample Questions
Q1) When discussing a diagnostic test,what does sensitivity refer to?
A) The ability of a diagnostic test to detect only the medical condition in question
B) The ability of a diagnostic test to detect the medical condition in question in every patient who has the condition
C) The frequency of the condition in the population tested at a given time
D) The quantity that tells the probability that a result from a diagnostic test is correct
Q2) The positive predictive value of a test is 92%.What does this tell us?
A) The condition is actually present in 92 out of every 100 people who test positive.
B) The condition is present in 92 out of every 100 people with similar demographic and clinical characteristics.
C) The test will give a negative result in 92 out of every 100 patients who do not have the condition.
D) The test will provide a correct result 92 of every 100 times.
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